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World Class King River Luxury Firm Innerspring Mattress by Beautyrest

Experience the firm comfort of the King River™ Luxury Firm innerspring mattress by Simmons Beautyrest! This 2000 density coil unit with Pocketed Coil® design offers unique ventilated AirCool® BeautyEdge® foam encasement with Quantumlock® edge support working in tandem to provide conforming back support. With upholstery design featuring TruTemp™ Gel and the Mattress Warehouse exclusive BeautyCool® Gel lumbar support, it’s always about support and comfortable sleeping temperatures with the King River™. Combine with a Simmons Beautyrest foundation for the ultimate in support for your new mattress purchase!

Availability: In stock

Price From: $2,059.99

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Additional Information

Additional Information

Brand Simmons Beautyrest
Adjustable Friendly Yes
Split Foundation Yes
Warranty Yes


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Size Chart

While mattress thickness can vary significantly, mattress size (width x length) generally adhere to these standard sizes:

Mattress Size Dimensions
Twin 37.6” x 74.5”
Twin XL 39” x 80”
Full 54” x 75”
Queen 60” x 80”
King 76” x 80”
California King 72” x 84”